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trouble correctly identifying 2d (x,y) coordinates.

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Hi, I have loaded a font and I would like to display it at (x,y) on the screen efficiently. This is good for displaying FPS and other info. So far, the two ways that I''ve explored are: 1) Change screen to orthogonal projection and use a simple glTranslate(...). Con: Need to change type of projection, might be slow if changing from perspective/orthogonal projections back and forth every frame. 2) Using perspective project, use glRasterPos2i(...). Con: Need to do funny calculations that take into account view angle, width and height. I don''t know how to do this Which is a better way of approaching this problem? Can anybody give me any hints on how THEY did this?

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